Thread-waxing device for sewing-fviachin es



(No Mudel.)

P.L.ALLEY. THREAD WAXING DEVICE FOR SEWING MACHINES, No. 583,968. Patented June 8,1897.

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FREDERICK L. ALLEY,,OF LYNN, MASSACHUSETTS.

THREAD-WAXING DEVICE FOR SEWlNG -MACHlNES.

SPECIFICATION forming part of Letters Patent No. 583,968, dated June 8, 1897.

Application filed December 21, 1896. Serial No. 616,371 [No model.)

To all whom it may concern.-

Be it known that 1, FREDERICK L. ALLEY,

a citizen of the United States, residing at Lynn, in the county of Essex and State of lllassachusetts, have invented certain new and useful Improvements in \Vax-Pots; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates generally to wax-pots for sewing-machines, and more particularly to that type of wax-pot which embodies a supply-reservoir and a wax-tube through which the thread passes and into which. the wax flows after it has been sufficiently liquefied in the lower portions of the supply-reservoir.

The present invention is an improvement upon the device shown and described in patent to Holmes, No. 564,838, dated July 28, 1896; and it consists of an improved form and arrangement of the wax-tube and strippers and an improved construction of the supply-reservoir.

The present invention is illustrated in the accompanying drawings, in which- Figure l is a longitudinal vertical section through a wax-pot embodying my invention, showing the upper end of the wax-tube in elevation; and Fig. 2 further illustrates details of construction.

In the drawings, A represents the supplyreservoir in which the supply-wax is placed and which is contracted toward its base, substantially as shown in said Holmes patent.

13 represents what I have herein termed the wax-tube, which in accordance with the present invention is arranged obliquely to the medial line of the reservoir and is projected under the same, so that the heat applied to the tube B to heat the wax therein is communicated to the lower portions of the reservoir and sufficientlyliquefies the wax in said portions to permit it to run into the tube B, said tube and reservoir being connected by a suitable port.

As shown in the drawings, the reservoir A is contracted to a port or opening a, formed in the base a thereof, and which registers with the bore of a Y branch I), formed on the wax-tube 13, the upper end of the branch I) being provided with a flange Z), which is bolted to a flange (L2 on the base a of the reservoir A, or the base of the reservoir A is otherwise connected to the branch Z) by a suitable connection which will prevent the escape of the wax.

It will be noted that the wax-tube l3 and the base a are formed with relatively thick walls of suitable metal and that the upper portions of the reservoir are formed with relatively thin walls, being in practice made of sheet metal. It is also to be noted that the base a is concave, being preferably in the form of a hollow frustum of a cone and forms the lower portion of the reservoir A, the sheet metal a of which the upper portion of the reservoir A is formed being secured to the inclined walls a of the frusto-conical portion of the base a. In practice I find it desirable to taper the Walls o upward, so that they are relatively thinner at the top than at the bottom.

The object of the construction above described is to facilitate the transmission of heat applied to the wax-tube B, as hereinafter described, to the lower portion of the reservoir and to prevent its transmission therefrom to the upper portion of the reservoir, the desired result being to keep the b ulk of the wax in the reservoir A in a solid state while a sufficient quantity at the base of the reservoir A is being liquefied and feeds the tube B.

Heat is applied to the wax-tube B to heat the wax therein, preferably by means of a steam-jacket D, which surrounds the tube 1) and is provided with the hollow ears or projections (1, extending onto the branch I), the arrangement being substantially the same as that shown in the patent hereinbefore referred to.

It will be noted that in the device of the Holmes patent the wax-tube, or tube within which the wax is heated, and through which the thread runs, is substantially horizontal, said tube being arranged at substantially a right angle to the medial line of the reser voir, and it has been found in practice that the pressure of the wax in the reservoir upon the wax in the tube is so great as to cause an objectionable leaking of the heated wax through the stripper at the end of which the thread leaves the tube, and it has been also found that owing to the fact that the thread is drawn inward through the stripper at the opposite end of the tube there is substantially no leakage at that end of the tube, the leakage occurring only through the stripper through which the thread is pulled outward from the tube.

In the arrangement of the present application the thread leaves the tube through the stripper at the upper end, which, by the inclination of the tube, is brought into such position with reference to the reservoir that the pressure of the wax there is so slight that it has no tendency to produce the objectionable leakage above referred to, and at the same time by projecting the inclined tube under the reservoirI retain in my improved construction all the advantages of the construction shown in said Holmes patent.

Myimproved arrangement of the strippers as shown in the drawings is described as follows: The bore of the wax-tube B. is closed by a thread-block E, provided with the usual thread-aperture 6, through which the thread passes into (or from) the tube 13. To hold the thread-block E in position, its periphery e is conveniently threaded and engages a threaded bearing in theinterior of the tube 13. Outside of the thread-block E the bore ofthetube B is enlarged to form a chamber F, to which is fitted what I have herein termed a stripper-sleeve H, which is movable longitudinally in said chamber. As shown in the drawings, the inner end h of the strippersleeve II is beveled and engages a correspond- I ingly-beveled shoulder f within the tube 15,

thus insuring a tight connection, which will prevent any escape of wax around the outside of the sleeve II. \Vithin the sleeve H is placed the elastic block or washer L, which is made of rubber or other suitable material and is provided with a thread-aperture Z in line with but smaller than the thread-aperture e in the thread-block E, the block or washer L forming the stripper proper. The stripper L is fitted to the bore of the strippersleeve H, and is adjustable along the same by means of a thread-bolt P, the inner end of which bears against the stripper L, and which engages a threaded bearing in the sleeve II. The bolt 1? is provided with a thread-aperture p, which registers with the apertures Z and e.

In order that the sleeve H may be readily removed from and adjusted in the tube B, I have provided the following arrangement: From the sleeve II are projected the lugs h, which extend laterally from said sleeve H to clear the wall of the tube 13 and then longitudinally along the tube 13. The lugs h carry the inclined shoulders 7L2, which take under the lugs or project-ions b on the tube 13. The abovedescribed arrangement is such that by turning the sleeve H until the shoulders h clear the lugs b the sleeve H, with the stripper therein, maybe readily removed from the tube 13, and to replace the sleeve iI in the tube B the sleeve H is, pushed into the chamber F until the shoulders 7L2 are ;n position to take under the lugs Z2 when the sleeve H is turned, and the inclined shoulders 7L2 act to force it farther into the chamber F and to bring the shoulder h firmly in contact with the shoulder f. When the sleeve H has been set up as above described, it is held firmly in position by means of the set-screws 72.3, which are provided with thread-bearings in the shoulders 77;, and are set up against the tube B to punch the same and prevent any accidental rotation of the sleeve H, which would tend to displace it in chamber F.

It'will be noted that the stripper L projects from the inner end of the sleeve II and comes in contact with the block E before the shoulder h is seated upon the shoulder f, so that the stripper L is compressed and its threadaperture Z more or less contracted by the ac tion of the shoulder 71, as before described. The degree of compression of the stripper L and the contraction of its thread-aperture 11 may be readily regulated by means of the bolt 1?, which may be turned to cause the stripper L to project a greater or less distance from the sleeve H, as required.

The operation of my invention has already been suficiently described in connection with the foregoing description of the form and arrangement of parts.

I therefore claim asnovel and desire to secure by Letters Patent of the United States 1. In a wax-pot, the combination with a supply-reservoir, of a tube in whichthe wax is heated communicating therewith, said tube being arranged obliquely to the medial line of the reservoir and projected under the reservoir, substantially as described.

2. In a wax-pot, the combination with a supply-reservoir, of a wax-tube arranged obtherewith, and a heating device acting on said tube, substantially as described.

3. In a Wax-pot, the combination with a tube through which the thread passes, of a thread-block, a stripper, a stripper-sleeve. carrying said stripper, arranged to move longitudinally within the tube, to compress the stripper against the thread-block, substantially as described.

4. In a wax-pot, the combination with a tube through which the thread passes, or a stripper, and a stripper-sleeve carrying said stripper, and movable along said tube, of inclined complemental shoulders on the stripper-sleeve and tube, arranged to form a tight connection between said sleeve and tube, su bstantially as described.

5. In a wax-pot, the combination with the tube through which the thread passes, of a stripper, a sleeve movable within the tube carrying the stripper, and means for adj usting the position of the stripper in said sleeve. substantially as described.

IIO

6. In a Wax-pot, the combination of the tube through which the thread passes, of a stripper, a sliding sleeve carrying the stripper, inclined shoulders carried by said sleeve outside the tube, arranged to engage projections on the tube, substantially as described.

'7, In a Wax-pot, the combination with the tube through which the thread passes, of a thread-block, a stripper, a sleeve carrying the stripper, free to slide and rotate within the tube, and means actuated by a rotation of the sleeve for imparting a sliding motion to the sleeve along the tube, to compress the stripper against the thread-block, substantially as described.

FREDERICK L. ALLEY.

Witnesses:

JOHN J. COLLINS, A. O. OME. 

